Mast for wireless telegraphy.



0. FRI

MAST FOR WIRBLB LEGRAPHY.

APPLICATION rum) IEB.20, 1e12,

' 1,026,388. Patented May 14, 1912.

I I encoz a 33), aflio anujg ,eo .and' [in addition thereto, a considerable OTTO FRICKE, OF NEW YORK, N Y.

MAST FOR WIRELESS TELEGRAPHY.

Specification of Letters Patent.

Patented May 14, 1912.

Application filed February 20, 1912. Serial No. 678,758.

To all whom it may concern: a

Be it known that I, Or'ro Fnroxn, a citizen of the German Empire, residingin New York, in the-borough of the Bronx, county and State of New York, have invented certain new and useful Improvements in Masts for Wireless Telegraphy, of which the following is a specification.

v v -This invention relates to an improved mast for wireless telegraph stations by which the mast and the antennae sup orted on the same are protected in an e ective manner against wind-pressure.

It was found necessary heretofore, especially in stormy weather, to lower the-antennae of wireless telegraph stations from the mast so as to prevent damage and injury to the same. This, however, had the disadvantags of temporarily interrupting the wireless telegraphic intercourse between stations on land and on vessels and between the stations on the vessels themselves.

The object of this invention therefore i to overcome this objection and'to provide in dulum-mast, by which the mast is less 1n j-.uriously exposed to wind-pressure, the- 'lowerin(gobviate addition to the m'ain-mast a yielding or penf-the antennae in stormy weather and the safety and reliability of wireless-intercourse? greatly increased,

saving in the construction expenses of such 7 masts"obtained; .ancl for this urpose the invention consists of a mast For wireless telegraph, stations which comprises a main or foundation-mast and an auxiliary or pendulum-mast supported on the apex or terminal ofthe main-mast and balanced thereon by means of counter-weights applied to .arms' ofvthe pendulum-mast extending downwardly apex-ofthe main-mast. t p Inthe-accompanying'drawings, Figure 1 represents a side-elevation ofv the upper part of my improved'mast for wirelesstelegraph station's; Fig. 2 is a; diagrammatic plan to' some i distance below the V view, of .the mastandth guy-ropes forthe pm'ainmast and FigrQ B is a detail "vertical central section, .drawn on a larger scale througlifthe'upper endorapex of the main -mast' and the lower endof'theaaxiliary or ondin arts: p p

pendulum-mast- Y r Similar letters of referencefindicate correhroughout' the several figuresoft e drawingsnv /r: j

'- j Referring to theidrawings,represents the main or foundation-portion of my improved mast for wireless telegraph stations. The main-portion 5 is constructed preferably of open iron girder-work and supported by means of guy-ropes 6 in connection with suitable foundations 8 in the usual wellknown manner. The main-portion 5 is provided at its upper end with a solid apex or terminal 4, as shown in Fig. 3, which ter minal is preferably insulated by suitable insulating material and provided with a concave depression at its upper end in which is supported the auxiliary or pendulum-portion 1 of the mast by its rounded off lower end or terminal 7.

The auxiliary or pendulum-mast 1 is made of open girder-work in the same manner as-the main-mast and provided with outwardly inclined and downwardly-extending arms 2, which extend below the point of support 4 of the main-section 5 and which are provided at their lower ends with c0unter-balancing weights 3 that are preferably made of cylindrical shape and filled with a non-freezable liquid, such as, glycerin, or other heavy material, so that the endulummast 1 is balanced on the apex of the mainmast whatever may be the position of the pendulum-mast under the wind-pressure thereon. The upper end of the pendulummast is provided with a lightning-rod and with means for suspendin the antennae 9 from the same. The auxiliary or pendulum-mast 1 follows the direction of the wind and assumes a more or less inclined osition relatively to the vertical axis 0 the main-mast according to the greater or less strength of the wind-pressure. By the variable inclination of the endulum-mast, the necessity of lowering t e antennae during stormy weather is entirely obviated, while I by the use of the pendulum-mast the hei ht of the entire mast can be increased so t at the antennae can be supported, especially when on board of steamers or other vessels, at a higher elevation than that of the ordinary masts of the vessels so as not to interfere with the same.

In place of the two downwardly-extending andcounter-balanced arms of the pendulum-mast 1,. four arms may be arranged, a second pair bein located at right angles to the first pair 0 counter-weighted arms. to 119 The advantages of my improved construction ofmasts for wireless telegraph stations are first, that the main-mast and its guy-ropes can be made much shorter and erected at much less expense than heretofore, as the auxiliary or pendulum-mast does not require any special wind-bracing; second, that the auxiliary or pendulum-mast can be made much lighter than the upper ends of the masts at present in use; third, that as the force of the air-pressure is taken up by the pendulum-mast which follows in its oscillations the direction and'strength of the wind, and as the pendulum-mast only acts by gravity in the direction of the axes of the main-mast, a much lighter and less expensive construction of the main-mast can be employed and as the same is not impaired by wind-pressure, also a vastly more effective mast for wireless telegraph stations obtained.

The construction of the auxiliary or pendulum-mast can also be used for protecting the upper ends of church-spires against the destructive action of the wind-pressure on the same, the spires being divided in an analogous manner into a stationary mainportion and a counter-balanced auxiliary or pendulum-portion. The same principle can also be applied to metallic smoke-stacks so that the height of these stacks can be increased and the pendulum-portion protects them to a considerable extent against the damaging efiect of wind-pressure.

I claim:

1. A mast for wireless telegraph stations, comprising a main or foundation-mast, and a counterbalanced auxiliary or pendulummast supported on the apex of the mainmast. 2. A mast for wireless telegraph stations, comprising a main or foundation-mast having a terminal bearing at its apex, and an auxiliary or pendulum-mast supported on said terminal'bearing and being provided with downwardly -extending arms having cointer-balancing weights at their lower en s.

3. A mast for wireless telegraph stations,

comprising a main or foundation-mast, havmg a concave bearlng at its apex, and an auxiliary or pendulum-mast having a as my invention, I have signed my name in presence of two subscribing Witnesses.

' OTTO FRICKE;

Witnesses:

J OHN MURTAGH, L. J. MURPHY. 

